Late Cretaceous-Cenozoic intraplate extension and tectonic transitions in eastern China: Implications for intraplate geodynamic origin

doi:10.1016/j.marpetgeo.2020.104379

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	Late Cretaceous-Cenozoic intraplate extension and tectonic transitions in eastern China: Implications for intraplate geodynamic origin
	Wu, Lulu 1,2; Mei, Lianfu 1; Paton, Douglas A.2; Liu, Yunsheng 3; Guo, Pengyuan 4; Shen, Chuanbo 1; Liu, Zhaoqian 1; Luo, Jin 3; Min, Caizheng 5; Li, Minghua 3
	2020-07-01
发表期刊	MARINE AND PETROLEUM GEOLOGY
ISSN	0264-8172
卷号	117 页码:17
通讯作者	Mei, Lianfu(lfmei@cug.edu.cn)
摘要	The geodynamic origin of intraplate extension remains poorly understood. For the case of the Late Cretaceous-Cenozoic intraplate extension in eastern China, its driving mechanism remains highly controversial due to the absence of a comprehensive understanding of significant tectonic transitions. This study uses the well-documented Cretaceous tectonic evolution as a background and integrates extensive multidisciplinary data in the Jianghan Basin, Bohai Bay Basin and Zhejiang area, to develop an integrated view of the Late CretaceousCenozoic geodynamic origin for the first time. During the Late Cretaceous, rifting and depocentres were distributed in the Jianghan Basin and were located in the central Bohai Bay Basin. During the Cenozoic, rifting and depocentres were initially focused in the western basins and then progressively migrated eastward, rather than continuing migrating eastward. The rifting and volcanism during the Middle Cenozoic (50-23 Ma) significantly increased, and all rift basins in eastern China were abandoned at the end of the Middle Cenozoic (similar to 26-23 Ma). The volcanism in the Zhejiang area was markedly enhanced during the Late Cenozoic (23-0 Ma). The asthenospheric mantle sources beneath the two rift basins were isotopically more depleted with an increased extent of melting from the Late Cretaceous (100-65 Ma) to Early Cenozoic (65-50 Ma); however, they became isotopically more enriched and heterogenous with a decreased melting extent (significantly reduced volatile content) from the Early Cenozoic to Middle Cenozoic. The mantle source beneath the Zhejiang area during the Late Cenozoic was isotopically more depleted and heterogeneous than during the Middle Cenozoic, with an increased extent of melting. These three-phase tectonic transitions together with tectonic correlations directly constrain the causal relationships between the intraplate extension in eastern China and the motions of the adjacent plates. Consequently, we propose that the Late Cretaceous-Cenozoic intraplate extension and tectonic transitions in eastern China were successively driven by the Paleo-Pacific slab rollback during the Late Cretaceous, the IndiaAsia collision during the Early-Middle Cenozoic and by the combination of the subduction of the Pacific Plate and India-Asia collision during the Late Cenozoic. Our study provides an integrated perspective for unraveling the geodynamic origin of intraplate extension.
关键词	Geodynamic origin Intraplate rifting Intraplate volcanism Eastern China Pacific slab rollback India-Asia collision
DOI	10.1016/j.marpetgeo.2020.104379
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[41776067] ; National Natural Science Foundation of China (NSFC)[41972152] ; Major National Science and Technology Programs, China[2016ZX05026-003-001] ; Major National Science and Technology Programs, China[2016ZX05024002-005] ; Major National Science and Technology Programs, China[2017ZX05035-001003] ; Major National Science and Technology Programs, China[2016ZX05002-006-007] ; Natural Science Foundation of Hubei Province[2016CFA084] ; Scientific Research Project of China Petroleum and Chemical Corporation[P14111]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000537575300024
出版者	ELSEVIER SCI LTD
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/167649
专题	中国科学院海洋研究所
通讯作者	Mei, Lianfu
作者单位	1.China Univ Geosci, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China 2.Univ Leeds, Sch Earth & Environm, Basin Struct Grp, Leeds LS2 9JT, W Yorkshire, England 3.SINOPEC, Jianghan Oilfield Branch Co, Res Inst Explorat & Dev, Wuhan 430223, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 5.CNOOC, Res Inst, Beijing 100027, Peoples R China
推荐引用方式 GB/T 7714	Wu, Lulu,Mei, Lianfu,Paton, Douglas A.,et al. Late Cretaceous-Cenozoic intraplate extension and tectonic transitions in eastern China: Implications for intraplate geodynamic origin[J]. MARINE AND PETROLEUM GEOLOGY,2020,117:17.
APA	Wu, Lulu.,Mei, Lianfu.,Paton, Douglas A..,Liu, Yunsheng.,Guo, Pengyuan.,...&Li, Minghua.(2020).Late Cretaceous-Cenozoic intraplate extension and tectonic transitions in eastern China: Implications for intraplate geodynamic origin.MARINE AND PETROLEUM GEOLOGY,117,17.
MLA	Wu, Lulu,et al."Late Cretaceous-Cenozoic intraplate extension and tectonic transitions in eastern China: Implications for intraplate geodynamic origin".MARINE AND PETROLEUM GEOLOGY 117(2020):17.

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